<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>

<HEAD lang="zh-CN">
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <TITLE>花瓣雨</TITLE>
    <META NAME="Generator" CONTENT="EditPlus">
    <META NAME="Author" CONTENT="">
    <META NAME="Keywords" CONTENT="">
    <META NAME="Description" CONTENT="">
    <style>
        html,
        body {
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
            overflow: hidden;
        }

        .container {
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
            background-color: #000000;
        }
    </style>
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</HEAD>

<BODY>

    <div id="jsi-cherry-container" class="container"></div>
    <script>
        var RENDERER = {
            INIT_CHERRY_BLOSSOM_COUNT: 30,
            MAX_ADDING_INTERVAL: 10,

            init: function () {
                this.setParameters();
                this.reconstructMethods();
                this.createCherries();
                this.render();
            },
            setParameters: function () {
                this.$container = $('#jsi-cherry-container');
                this.width = this.$container.width();
                this.height = this.$container.height();
                this.context = $('<canvas />').attr({ width: this.width, height: this.height }).appendTo(this.$container).get(0).getContext('2d');
                this.cherries = [];
                this.maxAddingInterval = Math.round(this.MAX_ADDING_INTERVAL * 1000 / this.width);
                this.addingInterval = this.maxAddingInterval;
            },
            reconstructMethods: function () {
                this.render = this.render.bind(this);
            },
            createCherries: function () {
                for (var i = 0, length = Math.round(this.INIT_CHERRY_BLOSSOM_COUNT * this.width / 1000); i < length; i++) {
                    this.cherries.push(new CHERRY_BLOSSOM(this, true));
                }
            },
            render: function () {
                requestAnimationFrame(this.render);
                this.context.clearRect(0, 0, this.width, this.height);

                this.cherries.sort(function (cherry1, cherry2) {
                    return cherry1.z - cherry2.z;
                });
                for (var i = this.cherries.length - 1; i >= 0; i--) {
                    if (!this.cherries[i].render(this.context)) {
                        this.cherries.splice(i, 1);
                    }
                }
                if (--this.addingInterval == 0) {
                    this.addingInterval = this.maxAddingInterval;
                    this.cherries.push(new CHERRY_BLOSSOM(this, false));
                }
            }
        };
        var CHERRY_BLOSSOM = function (renderer, isRandom) {
            this.renderer = renderer;
            this.init(isRandom);
        };
        CHERRY_BLOSSOM.prototype = {
            FOCUS_POSITION: 300,
            FAR_LIMIT: 600,
            MAX_RIPPLE_COUNT: 100,
            RIPPLE_RADIUS: 100,
            SURFACE_RATE: 0.5,
            SINK_OFFSET: 20,

            init: function (isRandom) {
                this.x = this.getRandomValue(-this.renderer.width, this.renderer.width);
                this.y = isRandom ? this.getRandomValue(0, this.renderer.height) : this.renderer.height * 1.5;
                this.z = this.getRandomValue(0, this.FAR_LIMIT);
                this.vx = this.getRandomValue(-2, 2);
                this.vy = -2;
                this.theta = this.getRandomValue(0, Math.PI * 2);
                this.phi = this.getRandomValue(0, Math.PI * 2);
                this.psi = 0;
                this.dpsi = this.getRandomValue(Math.PI / 600, Math.PI / 300);
                this.opacity = 0;
                this.endTheta = false;
                this.endPhi = false;
                this.rippleCount = 0;

                var axis = this.getAxis(),
                    theta = this.theta + Math.ceil(-(this.y + this.renderer.height * this.SURFACE_RATE) / this.vy) * Math.PI / 500;
                theta %= Math.PI * 2;

                this.offsetY = 40 * ((theta <= Math.PI / 2 || theta >= Math.PI * 3 / 2) ? -1 : 1);
                this.thresholdY = this.renderer.height / 2 + this.renderer.height * this.SURFACE_RATE * axis.rate;
                this.entityColor = this.renderer.context.createRadialGradient(0, 40, 0, 0, 40, 80);
                this.entityColor.addColorStop(0, 'hsl(330, 70%, ' + 50 * (0.3 + axis.rate) + '%)');
                this.entityColor.addColorStop(0.05, 'hsl(330, 40%,' + 55 * (0.3 + axis.rate) + '%)');
                this.entityColor.addColorStop(1, 'hsl(330, 20%, ' + 70 * (0.3 + axis.rate) + '%)');
                this.shadowColor = this.renderer.context.createRadialGradient(0, 40, 0, 0, 40, 80);
                this.shadowColor.addColorStop(0, 'hsl(330, 40%, ' + 30 * (0.3 + axis.rate) + '%)');
                this.shadowColor.addColorStop(0.05, 'hsl(330, 40%,' + 30 * (0.3 + axis.rate) + '%)');
                this.shadowColor.addColorStop(1, 'hsl(330, 20%, ' + 40 * (0.3 + axis.rate) + '%)');
            },
            getRandomValue: function (min, max) {
                return min + (max - min) * Math.random();
            },
            getAxis: function () {
                var rate = this.FOCUS_POSITION / (this.z + this.FOCUS_POSITION),
                    x = this.renderer.width / 2 + this.x * rate,
                    y = this.renderer.height / 2 - this.y * rate;
                return { rate: rate, x: x, y: y };
            },
            renderCherry: function (context, axis) {
                // 绘制原有花瓣形状
                context.beginPath();
                context.moveTo(0, 40);
                context.bezierCurveTo(-60, 20, -10, -60, 0, -20);
                context.bezierCurveTo(10, -60, 60, 20, 0, 40);
                context.fill();

                // 添加稳定文字
                context.save();
                context.translate(0, 10);
                context.rotate(-Math.PI / 6);

                context.font = "12px Microsoft Yahei";
                context.fillStyle = "rgba(255,255,255,0.9)";
                context.textAlign = "center";
                context.textBaseline = "middle";

                context.fillText("石泽蕊", 0, 0);
                context.restore();

                // 修改后的条纹绘制（更自然柔和的曲线）
                context.strokeStyle = 'rgba(255, 255, 255, 0.3)'; // 半透明白色
                context.lineWidth = 1; // 更细的线条

                // 绘制更自然的曲线条纹
                for (let i = -2; i <= 2; i++) { // 减少条纹数量
                    context.beginPath();
                    context.moveTo(0, 40);
                    // 使用更平滑的控制点参数
                    const controlX = i * 10 + Math.random() * 2; // 增加随机性
                    const controlY = -20 + Math.random() * 10;
                    const endX = i * 3 + Math.random() * 2;
                    const endY = -24 + Math.abs(i) * 2;
                    context.quadraticCurveTo(controlX, controlY, endX, endY);
                    context.stroke();
                }
            },
            render: function (context) {
                var axis = this.getAxis();

                if (axis.y == this.thresholdY && this.rippleCount < this.MAX_RIPPLE_COUNT) {
                    context.save();
                    context.lineWidth = 2;
                    context.strokeStyle = 'hsla(0, 0%, 100%, ' + (this.MAX_RIPPLE_COUNT - this.rippleCount) / this.MAX_RIPPLE_COUNT + ')';
                    context.translate(axis.x + this.offsetY * axis.rate * (this.theta <= Math.PI ? -1 : 1), axis.y);
                    context.scale(1, 0.3);
                    context.beginPath();
                    context.arc(0, 0, this.rippleCount / this.MAX_RIPPLE_COUNT * this.RIPPLE_RADIUS * axis.rate, 0, Math.PI * 2, false);
                    context.stroke();
                    context.restore();
                    this.rippleCount++;
                }
                if (axis.y < this.thresholdY || (!this.endTheta || !this.endPhi)) {
                    if (this.y <= 0) {
                        this.opacity = Math.min(this.opacity + 0.01, 1);
                    }
                    context.save();
                    context.globalAlpha = this.opacity;
                    context.fillStyle = this.shadowColor;
                    context.strokeStyle = 'hsl(330, 30%,' + 40 * (0.3 + axis.rate) + '%)';
                    context.translate(axis.x, Math.max(axis.y, this.thresholdY + this.thresholdY - axis.y));
                    context.rotate(Math.PI - this.theta);
                    context.scale(axis.rate * -Math.sin(this.phi), axis.rate);
                    context.translate(0, this.offsetY);
                    this.renderCherry(context, axis);
                    context.restore();
                }
                context.save();
                context.fillStyle = this.entityColor;
                context.strokeStyle = 'hsl(330, 40%,' + 70 * (0.3 + axis.rate) + '%)';
                context.translate(axis.x, axis.y + Math.abs(this.SINK_OFFSET * Math.sin(this.psi) * axis.rate));
                context.rotate(this.theta);
                context.scale(axis.rate * Math.sin(this.phi), axis.rate);
                context.translate(0, this.offsetY);
                this.renderCherry(context, axis);
                context.restore();

                if (this.y <= -this.renderer.height / 4) {
                    if (!this.endTheta) {
                        for (var theta = Math.PI / 2, end = Math.PI * 3 / 2; theta <= end; theta += Math.PI) {
                            if (this.theta < theta && this.theta + Math.PI / 200 > theta) {
                                this.theta = theta;
                                this.endTheta = true;
                                break;
                            }
                        }
                    }
                    if (!this.endPhi) {
                        for (var phi = Math.PI / 8, end = Math.PI * 7 / 8; phi <= end; phi += Math.PI * 3 / 4) {
                            if (this.phi < phi && this.phi + Math.PI / 200 > phi) {
                                this.phi = Math.PI / 8;
                                this.endPhi = true;
                                break;
                            }
                        }
                    }
                }
                if (!this.endTheta) {
                    if (axis.y == this.thresholdY) {
                        this.theta += Math.PI / 200 * ((this.theta < Math.PI / 2 || (this.theta >= Math.PI && this.theta < Math.PI * 3 / 2)) ? 1 : -1);
                    } else {
                        this.theta += Math.PI / 500;
                    }
                    this.theta %= Math.PI * 2;
                }
                if (this.endPhi) {
                    if (this.rippleCount == this.MAX_RIPPLE_COUNT) {
                        this.psi += this.dpsi;
                        this.psi %= Math.PI * 2;
                    }
                } else {
                    this.phi += Math.PI / ((axis.y == this.thresholdY) ? 200 : 500);
                    this.phi %= Math.PI;
                }
                if (this.y <= -this.renderer.height * this.SURFACE_RATE) {
                    this.x += 2;
                    this.y = -this.renderer.height * this.SURFACE_RATE;
                } else {
                    this.x += this.vx;
                    this.y += this.vy;
                }
                return this.z > -this.FOCUS_POSITION && this.z < this.FAR_LIMIT && this.x < this.renderer.width * 1.5;
            }
        };
        $(function () {
            RENDERER.init();
        });
    </script>
</BODY>

</HTML>